Amino derivatives of triazolo (4,5-b) pyridines

Abstract From the Canadian patent

Amino derivatives of triazolo4,5-bpyridines having the general formula, wherein R is hydrogen or lower alkyl; R1 is hydrogen lower, alkyl, phenyl or phenyl-lower alkyl; R2 and R3 each is hydrogen lower alkyl, lower alkenyl, lower alkanoyl phenyl, substituted, phenyl, phenyl-lower alkyl di-lower alkylamino-lower alkyl, benzoyl substituted benzoyl, phenyl-lower alkanoyl substituted, phenyl-lower alkanoyl, lower alkanesulfonyl benzensulfonyl, or toluenesulfonyl, all of said substituted groups being phenyl bearing one or two lower alkyl, halogen trifluoromethyl, amino, or carboxy group; or R2 and R3 together with nitrogen to which they are attached form pyrrolidino piperidino, pyrazolyl, …